now version controlled.

1 files changed, 46 insertions, 0 deletions

diff --git a/bgetding.c b/bgetding.c
new file mode 100644
index 0000000..cc427e2
--- /dev/null
+++ b/bgetding.c
@@ -0,0 +1,46 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+
+typedef struct
+{
+	double x, y, z;
+} Vec;
+
+void
+usage(void)
+{
+	fprint(2, "usage: %s [file]\n", argv0);
+	exits("usage");
+}
+
+void
+main(int argc, char *argv[])
+{
+	Biobuf *bin;
+	Vec v;
+	int fd, r;
+
+	fd = 0;
+	ARGBEGIN{
+	default: usage();
+	}ARGEND;
+	if(argc > 1)
+		usage();
+	else if(argc == 1){
+		fd = open(argv[0], OREAD);
+		if(fd < 0)
+			sysfatal("open: %r");
+	}
+	bin = Bfdopen(fd, OREAD);
+	if(bin == nil)
+		sysfatal("Bfdopen: %r");
+	r = Bgetd(bin, &v.x);
+	print("got %g r=%d\n", v.x, r);
+	r = Bgetd(bin, &v.y);
+	print("got %g r=%d\n", v.y, r);
+	r = Bgetd(bin, &v.z);
+	print("got %g r=%d\n", v.z, r);
+	Bterm(bin);
+	exits(0);
+}